These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Putin sees how weak and pathetic the American president is, which is why he just made a big announcement: Vladimir Putin endorses Donald Trump for President! Russian President Vladimir Putin had kind words for his âstablemateâ Donald Trump during an annual end-of-the-year Q&A session in Moscow.